Kármán line
E415469
The Kármán line is a commonly accepted boundary of outer space, defined at an altitude of 100 kilometers above Earth's sea level, used to distinguish aeronautical flight from astronautical spaceflight.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Kármán line canonical | 5 |
| Kármán line used as conventional space boundary | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4117987 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Kármán line Context triple: [SpaceShipOne, spaceBoundaryStandard, Kármán line]
-
A.
Baikonur
Baikonur is a town in Kazakhstan historically associated with the Soviet and Russian space programs, giving its name to the nearby Baikonur Cosmodrome.
-
B.
Oberon Plateau
Oberon Plateau is a prominent elevated region on Oberon, one of Uranus’s major icy moons, characterized by its rugged, heavily cratered terrain.
-
C.
Baikonur Cosmodrome
Baikonur Cosmodrome is the historic Soviet and now Russian-operated spaceport in Kazakhstan from which the first human spaceflight, carrying Yuri Gagarin, was launched.
-
D.
Polar Circle
Polar Circle is a cold-climate wildlife exhibit at the Central Park Zoo featuring Arctic species such as penguins and polar bears in a simulated polar environment.
-
E.
Gagarina
Gagarina is a Russian surname most notably associated with Yelena Gagarina, the daughter of cosmonaut Yuri Gagarin and a prominent museum director.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Kármán line Target entity description: The Kármán line is a commonly accepted boundary of outer space, defined at an altitude of 100 kilometers above Earth's sea level, used to distinguish aeronautical flight from astronautical spaceflight.
-
A.
Baikonur
Baikonur is a town in Kazakhstan historically associated with the Soviet and Russian space programs, giving its name to the nearby Baikonur Cosmodrome.
-
B.
Oberon Plateau
Oberon Plateau is a prominent elevated region on Oberon, one of Uranus’s major icy moons, characterized by its rugged, heavily cratered terrain.
-
C.
Baikonur Cosmodrome
Baikonur Cosmodrome is the historic Soviet and now Russian-operated spaceport in Kazakhstan from which the first human spaceflight, carrying Yuri Gagarin, was launched.
-
D.
Polar Circle
Polar Circle is a cold-climate wildlife exhibit at the Central Park Zoo featuring Arctic species such as penguins and polar bears in a simulated polar environment.
-
E.
Gagarina
Gagarina is a Russian surname most notably associated with Yelena Gagarina, the daughter of cosmonaut Yuri Gagarin and a prominent museum director.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
altitude definition
ⓘ
boundary of outer space ⓘ |
| above | stratopause ⓘ |
| alternativeDefinitionComparedWith | 80-kilometer space boundary used by some U.S. agencies ⓘ |
| altitude |
100 kilometers above mean sea level
ⓘ
62 miles above mean sea level ⓘ |
| associatedWith |
aerospace engineering
ⓘ
space law ⓘ spaceflight records ⓘ |
| below |
exosphere
ⓘ
thermosphere ⓘ |
| category |
Aerospace engineering
ⓘ
Earth’s atmosphere ⓘ
surface form:
Atmosphere of Earth
Outer space ⓘ Spaceflight ⓘ |
| criterion |
where aerodynamic lift becomes insufficient for aircraft
ⓘ
where orbital velocity is required to support a vehicle ⓘ |
| hasApproximatePressure | about 0.0003 atmospheres ⓘ |
| hasLayerRelation | near the boundary of the mesosphere and thermosphere ⓘ |
| historicalNote | proposed in the mid-20th century ⓘ |
| locatedIn |
Earth’s atmosphere
ⓘ
surface form:
Earth's atmosphere
|
| namedAfter | Theodore von Kármán ⓘ |
| namedAfterNationality | Hungarian-American ⓘ |
| namedAfterOccupation | aerodynamicist ⓘ |
| notUniversallyAdoptedBy | United States government ⓘ |
| partOf | conventional definitions of outer space ⓘ |
| recognizedBy | many international aerospace organizations ⓘ |
| relevance |
human spaceflight
ⓘ
satellite operations ⓘ space tourism ⓘ |
| separates |
Earth's atmosphere
ⓘ
outer space ⓘ |
| unitOfAltitude | kilometer ⓘ |
| usedBy | Fédération Aéronautique Internationale ⓘ |
| usedFor |
defining the start of spaceflight
ⓘ
distinguishing aeronautics from astronautics ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Kármán line Description of subject: The Kármán line is a commonly accepted boundary of outer space, defined at an altitude of 100 kilometers above Earth's sea level, used to distinguish aeronautical flight from astronautical spaceflight.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Flew on Blue Origin New Shepard suborbital flight on 2021-07-20
subject surface form:
Earth's atmosphere
this entity surface form:
Kármán line used as conventional space boundary